Home / 821,215.80-1,230,786.90-727,903.80

Finding the Fourth Proportional to 821,215.80, 1,230,786.90 and 727,903.80

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Solution

The fourth proportional to 821,215.80, 1,230,786.90 and 727,903.80 is: 1,090,936.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,215.80 : 1,230,786.90 = 727,903.80 : x
  2. Step 2: Convert to fraction form
    821,215.80/1,230,786.90 = 727,903.80/x
  3. Step 3: Cross multiply
    821,215.80x = 1,230,786.90 × 727,903.80
  4. Step 4: Simplify right side
    821,215.80x = 895,894,461,500.22
  5. Step 5: Solve for x
    x = 895,894,461,500.22/821,215.80
  6. Step 6: Final answer
    x = 1,090,936.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.